Abstract
Abstract Although sedentary behavior (SB) is related to the development of metabolic diseases, there is still no consensus in literature about the association between accelerometer-based SB and obesity, especially adjusted for cardiovascular risk factors and level of daily physical activities. The aim was to evaluate the association between obesity and SB adjusted for potential confounders in adults. Data from 780 participants of the Epidemiology and Human Movement (EPIMOV) Study were analyzed. Body weight, body mass index (BMI), and fat body mass as percentage (%FBM) (bioelectrical impedance) were obtained and, then, used to stratify participants. SB was objectively measured using triaxial waist-worn accelerometers placed above the dominant hip during waking hours for at least four consecutive days (4-7 days). SB and its pattern were not significantly different between obesity groups. Although SB presented some significant correlations with obesity, the correlation and determination coefficient indicated weak association between SB and obesity (e.g., BMI and %FBM). Obesity presented little or no association with SB and its pattern after adjustment for potential confounders, especially when SB is measured through accelerometry.
Highlights
Obesity is a growing worldwide public health problem, which is associated with cardiovascular problems, diabetes, cancer and other diseases[1]
The prevalence of diabetes was higher in morbid obesity in comparison to the other groups
The same was observed for prevalence of hypertension in high and morbid obesity and for prevalence of dyslipidemia in moderate, high and morbid obesity (Table 1)
Summary
Obesity is a growing worldwide public health problem, which is associated with cardiovascular problems, diabetes, cancer and other diseases[1]. Increased time in sedentary behavior (SB), as well as reduced level of daily physical activities results in decreased total energy expenditure[3]. Adopting SB (e.g. activities with energy expenditure ≤ 1.5 Metabolic Equivalent of Task (METs) or sitting and lying postures) differs from being physically inactive, both of which may or may not coexist[5]. The English expression “Active Couch Potato” refers to the subject who meets the minimum recommended physical activity, but spends much time in SB, which can be harmful[5]. SB should gain attention in public health policies and recommendations on physical inactivity and disease prevention[6] since SB is an independent predictor of premature mortality[7] and has potential for the development of metabolic diseases due to the absence of prolonged muscle contraction[8]
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